This is a good modeling idea to consider Homer, if we truly understand the implications noted in the limitations on this issue. In my application I attempted to follow the suggestion noted. However, due to the radials at an angle with the radiator you will see an error creep in the implementation. I also did as noted in this area of the instructions and tested the idea, and I found little to no noticeable difference as long as I stayed close to the rule.
Again all this hoopla about this limitation or that, looks to be a portion of crying Wolf. The particular factor is true, I have experienced the consequences, but it is strictly a matter of degree and magnitude when we think about these type of errors and what limitations mean. Just reading some words won't tell the story.
Being curious, this is why I ofter ask the question, "...how much difference are you talking about?"
In a post above I just asked SW the question to tell me why my models don't show what his 12 antenna design experts predicted would happen using Eznec, where they all 12 claimed that Eznec could not recognize the radials in such a design, and the models would show a max gain and angle at or about 40* degrees, as noted to be indicative of all 3/4 wave radiators.
If we read the full section on this limitation for close wires, there is some exception to the rule that no body seems to want to talk about. I have tested this idea on several of my models and I find the rule is well based in truth and will actually stop you from proceeding with an Eznec scan if you exceed the limitation. However, I found a basic way to mitigate the problem, and it follows from common sense thinking, experience, and testing. If one only thinks about the issue and considers what happens when we try and connect two wires together the idea is quite clear.
This is all I'm going to say on the subject, because I do not get help from others, and I am provoked to respond the same with modeling.
Homer I did talk to you about this and I showed you the words, so I hope you will honor this confidence, but if you choose not, then that will be alright, I'll understand. Plus this idea is so easy to figure out anyway, if you understand Eznec just a little. Personally I don't have much fear of the idea getting out this way, because most are so locked into their own thinking, they cannot see the forest for the trees, so-it-is-said.